Electric water level measuring device

The invention relates to the technical field of water level measuring equipment, in particular to an electric water level measuring device which comprises a support. The roller is rotationally arranged on the support, a water level measuring scale is wound on the support, and an alarm mechanism is arranged at the free end of the water level measuring scale; the driving mechanism penetrates through the support to be connected with the roller and is used for driving the roller to rotate and driving the water level measuring scale and the alarm mechanism to stretch into the well so as to measure the water level in the well. A water level measuring scale is wound on the outer wall of the roller, an alarm mechanism is arranged at the free end of the water level measuring scale, the driving mechanism rotates in the forward direction to drive the roller to rotate and drive the water level measuring scale to extend into a well, and when the alarm device at the free end of the water level measuring scale makes contact